The French was Ronaldinho's teammate in PSG
Ronaldo de Assís Moreira, Ronaldinho, played two seasons in Paris (2001–03), before signing for Barça. In the second one he played alongside French midfielder Jérôme Leroy, currently retired.
In a chat with Emmanuel Petit, Christophe Dugarry and Frank Leboeuf, also French ex-football players, Leroy explained that Ronaldinho "never trained during the week and he showed up on Fridays to play on Saturdays".
Here you can watch the video in French: